I'm trying to reserve judgement on Apple's quality as a whole because every mass-produced product is going to have a few defective units out of the thousands and mistakes happen, but today I dropped my macbook off for repairs for the third time in a month. I got the computer in early June. About a week after recieving it, I upgrade the RAM and hard drive, and everything works flawlessly for about the next two months. In early August I started getting the now infamous random shutdowns. I go to the genius bar, and speak with the tech there - even though I couldn't replicate the issue in front of him he takes my word for it and sends the unit off to the repair center for a logic board replacement. The genius knows I used non-apple parts but it does not matter to him because the problem occurs with the old RAM and HDD as well. Repair #1: My computer sits at the repair center for a full week before the parts arrive and the repair is done. Due to weekends and such, I finally get my mac back about two weeks after sending it off. Everything works fine ... for a few days. Repair #2: The random shut downs begin again with a vengeance after about a week being back. This time the computer shuts down right in front of the genius. He wonders why the repair didn't fix the issue and looks at the repair log. Here is what was replaced in repair #1: "APP-605-0994 SVC, TOP CASE W APP-603-9857 ASSY, BEZEL, M42 APP-590-5254 PWR CRD, GND AC ADAPTER, NMP, US" The genius discovered that the repair center replaced the top case (I had no discoloration but they did anyway) and a whole bunch of other parts except the logic board. They were as surpised as I was, becuase in their defense they did send the correct instructions. I told them that I leave for college in about two weeks, so having to have my computer be sent off again is not okay. Luckily they discovered that they had a spare logic board in store, so they offered to do an in-store repair so I would not have to wait again. Six hours later, I pick up a working macbook and all is good again ... for a few days. Repair #3: A few days ago I begin to burn a CD-R in iTunes, but I cancel the burn mid-way because the playlist is wrong ... and here is where problem #3 begins. The CD refuses to eject. I attempt to restart the computer, but the computer refuses to begin the shut-down sequence, so I force-restart it. Upon restart, the computer hangs at the blank grey screen. All it does is attempt to read from the CD drive, and no keyboard commands work. Booting from firewire does not work. Putting back in the original Apple RAM and hard drive (which I was too lazy to sell, luckily) did not change anything. Earlier today, the genius I was helped by said that because I was using non-apple RAM and Hard drive when the grey screen issue began, it is possible that those parts are the cause despite that the issue persists with different ram and hard drives. As a result, they are going to take the time to discover the source of the problem and then repair it. I leave for college in twelve days and now I'm worried that they will not only get it back to me after I leave, but also that they will bill me if they determine that my replacing of user-replaceable parts caused the problem. Any thoughts in general, or thoughts on what to expect?